Remember the Jan. 6 Committee DOJ referral

Therein they referred 4 criminal charges to the DOJ that Trump and others committed: Obstruction of an Official Proceeding (18 U.S.C. § 1512(c)), conspiracy to defraud the United States (18 U.S.C. § 371), conspiracy to make a false statement (18 U.S.C. §§ 371, 1001) and to "incite," "assist" or "aid and comfort" an insurrection (18 U.S.C. § 2383). 

Their report had abundant evidence of these crimes, mostly from Republicans, several of whom were in the Trump Administration. You can read the Executive Summary here.